White Mountains Insurance Group, Ltd.
+$174.3M
Net Activity
Institutions Holding
365
Popularity Rank
#1612
Avg Weight
0.26%
Total Value
$4.8B
365 institutions currently hold WTM, with 163 net buyers and 136 net sellers this quarter.
Institutional Moves (Q1 2026)
Neutral
Based on recent trading activity
Net Selling Institutions
136
Net Buying Institutions
163
Top 5 by Value
+$1.4B
Total Buy Value
$3.1B
Total Sell Value
163
Net Buyers
136
Net Sellers
No Form 144 planned sale filings in the last 90 days
No Schedule 13D/13G filings for this ticker
No Form 8-K filings for this ticker
Other stocks in the same GICS sector
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Total reported value
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336 institutions currently hold both WTM and this stock
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331 institutions currently hold both WTM and this stock
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3,558
Total reported value
$387.0B
318 institutions currently hold both WTM and this stock
The most-added stocks by 13F institutions this quarter
Institutions Holding
6,150
Total reported value
$2.1T
3245 13F institutions increased their position this quarter
Institutions Holding
5,957
Total reported value
$1.5T
3028 13F institutions increased their position this quarter
Institutions Holding
5,764
Total reported value
$3.0T
2743 13F institutions increased their position this quarter